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Re: Apple //e Reversed
Bryan Parkoff wrote:
Can you please list reversion for Apple //e?
Reversion A -- Display "Apple ][" with 6502AP or 6502B. Double Resolution
Is Not Supported
Reversion B -- Display "Apple //e" with 65C02 including Double Resolution
Supported.
Please list more. Thanks...
--
Yours Truly,
Bryan Parkoff
BParkoff@satx.rr.com
Rev A (820-0064-A) (1983)
Rev B (820-0064-B) introduced a few months later(1983),
The major change was the introduction of Double High Res
graphics
Also have some IIe motherboards with the motherboard part #
(820-0087-A) I think this may be just a part # change when the
Enhanced IIe came out. I'd be happy to hear different.
(820-0087-E) used in the Platinum IIe (extended keyboard). This
board replaced the two 2764 roms with one 27128 ROM. It also used
64k X 4 RAM instead of 64k X 1 RAM. I don't know of any way to tell
if a IIe has this or a regular Rev B without poping the lid and
taking a look. Apples tech reference says this board was introduced
with the extended keyboard however I have a dozen IIe produced just
previously with this board.
Then of course there were a couple versions of the PAL IIe but I don't
have much info on that.
The enhanced IIe was a separate item.
In March 1985 Apple produced the Enhanced IIe. The enhancement consisted
of replacing the 6502 with a 65C02, new CD & EF ROMs and Video ROM.
Apple sold Enhancement kits for older IIes.
Wayne